Evidence map›Paper›PMID 31480270›Full record

ArticleInternational journal of environmental research and public health2019

Risk of Dementia in Patients with Leptospirosis: A Nationwide Cohort Analysis.

Chun-Hsiang Chiu, Po-Chung Chen, Ying-Chuan Wang, Cheng-Li Lin, Feng-You Lee, Chia-Chang Wu, Kuang-Hsi Chang

Open access · goldAbstract read
In one paragraph

Article in International journal of environmental research and public health, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.3field-weighted citation impact, top 43% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed, 3 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 5 institutions in 1 country.

Chun-Hsiang ChiuDivision of Infectious Diseases and Tropical Medicine, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center Taipei, Taipei 11490, Taiwan.
Po-Chung ChenDivision of Family Medicine, Department of Community Medicine, Taoyuan Armed Forces General Hospital, Taoyuan 32549, Taiwan.
Ying-Chuan WangDepartment of Family Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan.
Cheng-Li LinManagement Office for Health Data, China Medical University Hospital, Taichung 40402, Taiwan.
Feng-You LeeDepartment of Emergency Medicine, Taichung Tzu Chi Hospital, Taichung 42743, Taiwan.
Chia-Chang WuDepartment of Urology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11042, Taiwan.
Kuang-Hsi ChangDepartment of Medical Research, Tungs' Taichung Metroharbor Hospital, Taichung 43503, Taiwan. kuanghsichang@gmail.com.ORCID 0000-0002-4453-0068
China Medical University · TWTri-Service General Hospital · TWTaichung Hospital · TWTaipei Medical University · TWTaoyuan Armed Forces General Hospital · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundStudies have linked some bacterial infections with an increased likelihood for development of dementia. However, there is a paucity of data on the relationship between dementia and leptospirosis. In view of this, we conducted a retrospective cohort study to determine whether leptospirosis is a risk factor for dementia.

methodsData were collected from the Taiwan National Health Insurance Research Databases (2000-2010) to investigate the incidence of and risk factors for dementia in patients with leptospirosis. Patients with leptospirosis who did not have a history of dementia were enrolled in the study. For each leptospirosis patient, four controls were randomly selected after frequency matching of age, sex, and index date. Cox proportional hazard regression models were used for the analyses of dementia risk.

resultsA greater risk of dementia was observed in the leptospirosis cohort than in the non-leptospirosis cohort both in patients without any comorbidity (adjusted HR (aHR) = 1.23, 95% CI = 1.06-1.43) and with a comorbidity (aHR = 2.06, 95% CI = 1.7-2.5). Compared with the non-leptospirosis cohort without these comorbidities, the leptospirosis cohort with ≥2 comorbidities exhibited a significantly increased risk of dementia (aHR = 6.11, 95% CI = 3.15-11.9), followed by those with any one comorbidity (adjusted HR = 3.62, 95% CI = 1.76-7.46).

conclusionsPatients with leptospirosis were at a 1.89-fold greater risk of subsequent dementia, but potential genetic susceptibility bias in the study group is a major confound.

Indexed as

AdultAgedAged, 80 and overCohort StudiesComorbidityDementiaFemaleHumansIncidenceLeptospirosisMaleMiddle AgedProportional Hazards ModelsRetrospective StudiesRisk FactorsTaiwandementialeptospirosisrisk factorvascular hypothesis

Identifiers

PMID31480270
PMCPMC6747145
OpenAlexW2970498598

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.